CVE-2025-23806 is classified as a high-severity Cross-Site Request Forgery (CSRF) vulnerability found in the ThemeFarmer Ultimate Subscribe plugin. This vulnerability allows attackers to perform reflected XSS attacks, which can lead to unauthorized actions being taken on behalf of users. The severity of this vulnerability, with a CVSS score of 7.1, indicates a critical risk to users of the affected plugin.
Organizations using versions of Ultimate Subscribe from n/a up to and including version 1.3 should be aware of this vulnerability. The potential for exploitation exists due to the CSRF nature of the attack, which could allow attackers to trick users into executing malicious requests unknowingly.
With the vulnerability status marked as deferred, it is essential for organizations to assess their exposure and prioritize patching this plugin to mitigate the risk of reflected XSS attacks. Immediate action is recommended to protect the integrity of their applications and safeguard user data.
This vulnerability allows for low complexity attacks with no privileges required and minimal user interaction needed, heightening the urgency for organizations to address this issue.
Vulnerability Details
The vulnerability is classified under CWE-352, which pertains to Cross-Site Request Forgery. The detailed CVSS vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L, indicating a network attack vector, low attack complexity, and requiring user interaction.
The vulnerability was published on January 22, 2025, and remains relevant for those using the Ultimate Subscribe plugin without updates. Given the high severity level, organizations should be proactive in assessing their use of this plugin and implementing necessary security measures.
Technical Analysis
The root cause of CVE-2025-23806 stems from the improper handling of CSRF tokens, allowing attackers to forge requests that appear legitimate. The attack vector is classified as network-based, enabling remote exploitation without physical access to the target system.
Attack complexity is low, meaning that successful exploitation does not require significant technical skill or knowledge. No privileges are required for the attacker, and user interaction is necessary, as the victim must click on a malicious link or button to trigger the attack.
The confidentiality, integrity, and availability impacts are all rated as low, indicating that while the attack could allow for unauthorized actions, the overall risk to sensitive data exposure is minimal compared to other vulnerabilities.
Risk & Impact Analysis
Risk to organizations includes potential unauthorized actions on behalf of users, which could lead to data integrity issues or user account compromise. The blast radius is significant if multiple users are affected, as attackers can exploit the vulnerability to perform actions across multiple accounts.
Given the nature of CSRF vulnerabilities, the urgency assessment is high. Organizations should prioritize patching this vulnerability immediately to prevent exploitation and safeguard user trust.
The CVSS score of 7.1 indicates that organizations should not underestimate this vulnerability. Timely remediation is critical to maintain the security posture.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions include all releases of the Ultimate Subscribe plugin up to and including version 1.3. Organizations should assess their plugin versions and take appropriate remediation actions if they have not yet updated.
Mitigation & Remediation
Organizations are encouraged to apply the latest patches provided by the plugin developers. If the patch is not available, consider disabling the plugin until a fix is released. Regular updates and monitoring can help mitigate risks associated with vulnerabilities.
For further guidance on penetration testing and validation of security measures, organizations should consider engaging in penetration testing to identify and remediate similar weaknesses.
Detection Guidance
Organizations should monitor logs for unusual request patterns that may indicate CSRF attempts. Behavioral anomalies in user actions, especially following any clicks on suspicious links, should be thoroughly investigated.
Additionally, implementing CSRF tokens in forms can provide an extra layer of security against such vulnerabilities.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2025-23806 highlights the ongoing need for organizations to prioritize application security and maintain vigilance against CSRF vulnerabilities. It serves as a reminder of the importance of secure coding practices and the necessity of regular security assessments.
This vulnerability demonstrates a trend where even minor plugins can have serious security implications, emphasizing the need for comprehensive vulnerability management programs.
For organizations looking to enhance their security posture, reviewing their vulnerability management program is crucial to identifying and addressing similar risks before they can be exploited.
Furthermore, adopting a proactive approach through regular security testing and penetration testing methodology can significantly reduce the attack surface, making it more challenging for attackers to exploit vulnerabilities.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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